add (untested) pipe support

1 files changed, 361 insertions, 0 deletions

diff --git a/gralloc_drm_pipe.c b/gralloc_drm_pipe.c
new file mode 100644
index 0000000..0991287
--- /dev/null
+++ b/gralloc_drm_pipe.c
@@ -0,0 +1,361 @@
+/*
+ * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
+ * Copyright (C) 2010-2011 LunarG Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#define LOG_TAG "GRALLOC-PIPE"
+
+#include <cutils/log.h>
+#include <errno.h>
+
+#include <pipe/p_screen.h>
+#include <pipe/p_context.h>
+#include <state_tracker/drm_driver.h>
+#include <util/u_inlines.h>
+#include <util/u_memory.h>
+
+#include "gralloc_drm.h"
+#include "gralloc_drm_priv.h"
+
+struct pipe_manager {
+	struct gralloc_drm_drv_t base;
+
+	int fd;
+	char name[16];
+	pthread_mutex_t mutex;
+	struct pipe_screen *screen;
+	struct pipe_context *context;
+};
+
+struct pipe_buffer {
+	struct gralloc_drm_bo_t base;
+
+	struct pipe_resource *resource;
+	struct winsys_handle winsys;
+
+	struct pipe_transfer *transfer;
+};
+
+static enum pipe_format get_pipe_format(int format)
+{
+	enum pipe_format fmt;
+
+	switch (format) {
+	case HAL_PIXEL_FORMAT_RGBA_8888:
+		fmt = PIPE_FORMAT_R8G8B8A8_UNORM;
+		break;
+	case HAL_PIXEL_FORMAT_RGBX_8888:
+		fmt = PIPE_FORMAT_R8G8B8X8_UNORM;
+		break;
+	case HAL_PIXEL_FORMAT_RGB_888:
+		fmt = PIPE_FORMAT_R8G8B8_UNORM;
+		break;
+	case HAL_PIXEL_FORMAT_RGB_565:
+		fmt = PIPE_FORMAT_B5G6R5_UNORM;
+		break;
+	case HAL_PIXEL_FORMAT_BGRA_8888:
+		fmt = PIPE_FORMAT_B8G8R8A8_UNORM;
+		break;
+	case HAL_PIXEL_FORMAT_RGBA_5551:
+	case HAL_PIXEL_FORMAT_RGBA_4444:
+	default:
+		fmt = PIPE_FORMAT_NONE;
+		break;
+	}
+
+	return fmt;
+}
+
+static unsigned get_pipe_bind(int usage)
+{
+	unsigned bind = PIPE_BIND_SHARED;
+
+	if (usage & GRALLOC_USAGE_SW_READ_MASK)
+		bind |= PIPE_BIND_TRANSFER_READ;
+	if (usage & GRALLOC_USAGE_SW_WRITE_MASK)
+		bind |= PIPE_BIND_TRANSFER_WRITE;
+
+	if (usage & GRALLOC_USAGE_HW_TEXTURE)
+		bind |= PIPE_BIND_SAMPLER_VIEW;
+	if (usage & GRALLOC_USAGE_HW_RENDER)
+		bind |= PIPE_BIND_RENDER_TARGET;
+	if (usage & GRALLOC_USAGE_HW_FB) {
+		bind |= PIPE_BIND_RENDER_TARGET;
+		bind |= PIPE_BIND_SCANOUT;
+	}
+
+	return bind;
+}
+
+static struct pipe_buffer *get_pipe_buffer_locked(struct pipe_manager *pm,
+		const struct gralloc_drm_handle_t *handle)
+{
+	struct pipe_buffer *buf;
+	struct pipe_resource templ;
+
+	memset(&templ, 0, sizeof(templ));
+	templ.format = get_pipe_format(handle->format);
+	templ.bind = get_pipe_bind(handle->usage);
+	templ.target = PIPE_TEXTURE_2D;
+
+	if (templ.format == PIPE_FORMAT_NONE ||
+	    !pm->screen->is_format_supported(pm->screen, templ.format,
+				templ.target, 0, templ.bind)) {
+		LOGE("unsupported format 0x%x", handle->format);
+		return NULL;
+	}
+
+	buf = CALLOC(1, sizeof(*buf));
+	if (!buf) {
+		LOGE("failed to allocate pipe buffer");
+		return NULL;
+	}
+
+	templ.width0 = handle->width;
+	templ.height0 = handle->height;
+	templ.depth0 = 1;
+
+	if (handle->name) {
+		buf->winsys.type = DRM_API_HANDLE_TYPE_SHARED;
+		buf->winsys.handle = handle->name;
+		buf->winsys.stride = handle->stride;
+
+		buf->resource = pm->screen->resource_from_handle(pm->screen,
+				&templ, &buf->winsys);
+		if (!buf->resource)
+			goto fail;
+	}
+	else {
+		buf->resource =
+			pm->screen->resource_create(pm->screen, &templ);
+		if (!buf->resource)
+			goto fail;
+
+		buf->winsys.type = DRM_API_HANDLE_TYPE_SHARED;
+		if (!pm->screen->resource_get_handle(pm->screen,
+					buf->resource, &buf->winsys))
+			goto fail;
+	}
+
+	/* need the gem handle for fb */
+	if (handle->usage & GRALLOC_USAGE_HW_FB) {
+		struct winsys_handle tmp;
+
+		memset(&tmp, 0, sizeof(tmp));
+		tmp.type = DRM_API_HANDLE_TYPE_KMS;
+		if (!pm->screen->resource_get_handle(pm->screen,
+					buf->resource, &tmp))
+			goto fail;
+
+		buf->base.fb_handle = tmp.handle;
+	}
+
+	return buf;
+
+fail:
+	LOGE("failed to allocate pipe buffer");
+	if (buf->resource)
+		pipe_resource_reference(&buf->resource, NULL);
+	FREE(buf);
+
+	return NULL;
+}
+
+static struct gralloc_drm_bo_t *pipe_alloc(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_handle_t *handle)
+{
+	struct pipe_manager *pm = (struct pipe_manager *) drv;
+	struct pipe_buffer *buf;
+
+	pthread_mutex_lock(&pm->mutex);
+	buf = get_pipe_buffer_locked(pm, handle);
+	pthread_mutex_unlock(&pm->mutex);
+
+	if (buf) {
+		handle->name = (int) buf->winsys.handle;
+		handle->stride = (int) buf->winsys.stride;
+
+		buf->base.handle = handle;
+	}
+
+	return &buf->base;
+}
+
+static void pipe_free(struct gralloc_drm_drv_t *drv, struct gralloc_drm_bo_t *bo)
+{
+	struct pipe_manager *pm = (struct pipe_manager *) drv;
+	struct pipe_buffer *buf = (struct pipe_buffer *) bo;
+
+	pthread_mutex_lock(&pm->mutex);
+
+	if (buf->transfer)
+		pipe_transfer_destroy(pm->context, buf->transfer);
+	pipe_resource_reference(&buf->resource, NULL);
+
+	pthread_mutex_unlock(&pm->mutex);
+
+	FREE(buf);
+}
+
+static int pipe_map(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_bo_t *bo, int x, int y, int w, int h,
+		int enable_write, void **addr)
+{
+	struct pipe_manager *pm = (struct pipe_manager *) drv;
+	struct pipe_buffer *buf = (struct pipe_buffer *) bo;
+	int err = 0;
+
+	pthread_mutex_lock(&pm->mutex);
+
+	/* need a context to get transfer */
+	if (!pm->context) {
+		pm->context = pm->screen->context_create(pm->screen, NULL);
+		if (!pm->context) {
+			LOGE("failed to create pipe context");
+			err = -ENOMEM;
+		}
+	}
+
+	if (!err) {
+		enum pipe_transfer_usage usage;
+
+		usage = PIPE_TRANSFER_READ;
+		if (enable_write)
+			usage |= PIPE_TRANSFER_WRITE;
+
+		assert(!buf->transfer);
+
+		/*
+		 * ignore x, y, w and h so that returned addr points at the
+		 * start of the buffer
+		 */
+		buf->transfer = pipe_get_transfer(pm->context, buf->resource,
+				0, 0, usage, 0, 0,
+				buf->resource->width0, buf->resource->height0);
+		if (buf->transfer)
+			*addr = pipe_transfer_map(pm->context, buf->transfer);
+		else
+			err = -ENOMEM;
+	}
+
+	pthread_mutex_unlock(&pm->mutex);
+
+	return err;
+}
+
+static void pipe_unmap(struct gralloc_drm_drv_t *drv,
+		struct gralloc_drm_bo_t *bo)
+{
+	struct pipe_manager *pm = (struct pipe_manager *) drv;
+	struct pipe_buffer *buf = (struct pipe_buffer *) bo;
+
+	pthread_mutex_lock(&pm->mutex);
+
+	assert(buf && buf->transfer);
+
+	pipe_transfer_unmap(pm->context, buf->transfer);
+	pipe_transfer_destroy(pm->context, buf->transfer);
+	buf->transfer = NULL;
+
+	pm->context->flush(pm->context, NULL);
+
+	pthread_mutex_unlock(&pm->mutex);
+}
+
+static void pipe_init_kms_features(struct gralloc_drm_drv_t *drv, struct gralloc_drm_t *drm)
+{
+	struct pipe_manager *pm = (struct pipe_manager *) drv;
+
+	drm->mode_dirty_fb = (strcmp(pm->name, "vmwgfx") == 0);
+	drm->swap_mode = DRM_SWAP_FLIP;
+	drm->mode_sync_flip = 1;
+	drm->swap_interval = 1;
+	drm->vblank_secondary = 0;
+}
+
+static void pipe_destroy(struct gralloc_drm_drv_t *drv)
+{
+	struct pipe_manager *pm = (struct pipe_manager *) drv;
+
+	if (pm->context)
+		pm->context->destroy(pm->context);
+	pm->screen->destroy(pm->screen);
+	FREE(pm);
+}
+
+/* for nouveau */
+#include "nouveau/drm/nouveau_drm_public.h"
+/* for debug */
+#include "target-helpers/inline_debug_helper.h"
+
+static int pipe_init_screen(struct pipe_manager *pm)
+{
+	struct pipe_screen *screen;
+	int err = 0;
+
+	if (strcmp(pm->name, "nouveau") == 0) {
+		screen = nouveau_drm_screen_create(pm->fd);
+		if (!screen)
+			err = -EINVAL;
+	}
+	else {
+		LOGW("unknown driver %s", pm->name);
+		screen = NULL;
+		err = -EINVAL;
+	}
+
+	if (screen)
+		screen = debug_screen_wrap(screen);
+
+	pm->screen = screen;
+
+	return err;
+}
+
+struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_pipe(int fd, const char *name)
+{
+	struct pipe_manager *pm;
+
+	pm = CALLOC(1, sizeof(*pm));
+	if (!pm) {
+		LOGE("failed to allocate pipe manager for %s", name);
+		return NULL;
+	}
+
+	pm->fd = fd;
+	strncpy(pm->name, name, sizeof(pm->name) - 1);
+
+	pthread_mutex_init(&pm->mutex, NULL);
+
+	if (pipe_init_screen(pm)) {
+		FREE(pm);
+		return NULL;
+	}
+
+	pm->base.destroy = pipe_destroy;
+	pm->base.init_kms_features = pipe_init_kms_features;
+	pm->base.alloc = pipe_alloc;
+	pm->base.free = pipe_free;
+	pm->base.map = pipe_map;
+	pm->base.unmap = pipe_unmap;
+
+	return &pm->base;
+}